<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
       <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
       <title>??</title>
     <style type="text/css">
          *{margin:0;padding:0;}
           .layer1{
                   width:100%; 
                   height:100px;  
                   background:white;
                   color:black;
                   text-align:center;
                   }
           .layer1-1{
                     width:50%; 
                     height:100px;  
                     background:white;
                     color:black;
                     text-align:center;
                     float:left
                     }
           .layer1-2{
                     width:50%; 
                     height:100px;  
                     background:blue;
                     color:white;
                     text-align:center;
                     float:right
                     }    
           .layer2{
                   width:100%; 
                   height:200px; 
                   background:orange;
                   color:blue;
                   text-align:center;
                   }
           .layer3{
                   width:100%; 
                   height:130px;  
                   background:#00FFFF;
                   color:white;
                   text-align:center;
                   }           
           .layer2-1{
                     width:100%; 
                     height:100px; 
                     background:red;
                     color:blue;
                     text-align:center;
                     }
           .layer2-1-1{
                       width:33%;
                       float:left; 
                       height:100px; 
                       background:orange;
                       color:blue;
                       text-align:center;
                       }
           .layer2-1-2{
                       width:33%;
                       float:left; 
                       height:100px; 
                       background:yellow;
                       color:blue;
                       text-align:center;
                       }
           .layer2-1-3{
                       width:34%;
                       float:left; 
                       height:100px; 
                       background:blue;
                       color:blue;
                       text-align:center;
                       }
           .layer2-2{
                     width:100%; 
                     height:100px; 
                     background:red;
                     color:blue;
                     text-align:center;
                     }
           .layer2-2-1{
                       width:100%; 
                       height:50px; 
                       background:red;
                       color:blue;
                       text-align:center;
                       }
           .layer2-2-2{
                       width:100%; 
                       height:50px; 
                       background:pink;
                       color:blue;
                       text-align:center;
                       }
</style>
    </head>
    <body>
       <div class="layer1"><h1>
        <div class="layer1-1">
         </div>
       <div class="layer1-2"></div></h1>
         </div>
       <div class="layer2">  
        <div class="layer2-1">
         <div class="layer2-1-1">
          </div>   
         <div class="layer2-1-2">
          </div>   
         <div class="layer2-1-3">
          </div>   
          </div>   
        <div class="layer2-2">
         <div class="layer2-2-1">
          </div> 
         <div class="layer2-2-2">
           </div> 
       </div> 
       </div>    
       <div class="layer3">
       </div>
    </body>
 </html>